descent/UI/ICON.C

/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.  
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/
/*
 * $Source: f:/miner/source/ui/rcs/icon.c $
 * $Revision: 1.2 $
 * $Author: john $
 * $Date: 1994/11/18 23:07:33 $
 * 
 * An icon class.
 * 
 * $Log: icon.c $
 * Revision 1.2  1994/11/18  23:07:33  john
 * Changed a bunch of shorts to ints.
 * 
 * Revision 1.1  1993/12/07  12:30:23  john
 * Initial revision
 * 
 * 
 */


#pragma off (unreferenced)
static char rcsid[] = "$Id: icon.c 1.2 1994/11/18 23:07:33 john Exp $";
#pragma on (unreferenced)


#include <stdlib.h>
#include <string.h>

#include "mem.h"
#include "fix.h"
#include "types.h"
#include "gr.h"
#include "ui.h"
#include "key.h"

#define Middle(x) ((2*(x)+1)/4)

extern void ui_draw_shad( short x1, short y1, short x2, short y2, short c1, short c2 );

void ui_draw_box_in1( short x1, short y1, short x2, short y2 )
{

	gr_setcolor( CWHITE );
	gr_urect( x1+1, y1+1, x2-1, y2-1 );

	ui_draw_shad( x1+0, y1+0, x2-0, y2-0, CGREY, CBRIGHT );
}


void ui_draw_icon( UI_GADGET_ICON * icon )
{
	int height, width, avg;
	int x, y;
	
	
	if ((icon->status==1) || (icon->position != icon->oldposition))
	{
		icon->status = 0;

		ui_mouse_hide();
	
		gr_set_current_canvas( icon->canvas );
		gr_get_string_size(icon->text, &width, &height, &avg );
	
		x = ((icon->width-1)/2)-((width-1)/2);
		y = ((icon->height-1)/2)-((height-1)/2);

		if (icon->position==1 )
		{
			// Draw pressed
			ui_draw_box_in( 0, 0, icon->width, icon->height );
			x += 2; y += 2;
		}
		else if (icon->flag)
		{
			// Draw part out
			ui_draw_box_in1( 0, 0, icon->width, icon->height );
			x += 1; y += 1;	
		}
		else
		{
			// Draw released!
			ui_draw_box_out( 0, 0, icon->width, icon->height );
		}
	
		gr_set_fontcolor( CBLACK, -1 );		
		gr_ustring( x, y, icon->text );

		ui_mouse_show();
	}
}


UI_GADGET_ICON * ui_add_gadget_icon( UI_WINDOW * wnd, char * text, short x, short y, short w, short h, int k,int (*f)(void) )
{
	UI_GADGET_ICON * icon;

	icon = (UI_GADGET_ICON *)ui_gadget_add( wnd, 9, x, y, x+w-1, y+h-1 );

	icon->width = w;
	icon->height = h;
	//MALLOC( icon->text, char, strlen( text )+2);//Hack by KRB
	icon->text=(char *)malloc((strlen( text )+2)*sizeof(char));
	strcpy( icon->text, text );
	icon->trap_key = k;
	icon->user_function = f;
	icon->oldposition = 0;
	icon->position = 0;
	icon->pressed = 0;
	icon->canvas->cv_font = ui_small_font;

	// Call twice to get original;
	if (f)
	{
		icon->flag = (byte)f();
		icon->flag = (byte)f();
	} else {
		icon->flag = 0;
	}


	return icon;

}

void ui_icon_do( UI_GADGET_ICON * icon, int keypress )
{
	int OnMe;

	OnMe = ui_mouse_on_gadget( (UI_GADGET *)icon );

	icon->oldposition = icon->position;

	if ( B1_PRESSED && OnMe )
	{
		icon->position = 1;
	} else  {
		icon->position = 0;
	}

	icon->pressed = 0;

	if ((icon->position==0) && (icon->oldposition==1) && OnMe )
		icon->pressed = 1;

	if (icon->pressed == 1 || keypress==icon->trap_key )
	{
		icon->status = 1;
		icon->flag = (byte)icon->user_function();
		if (keypress==icon->trap_key) last_keypress = 0;
	}

	ui_draw_icon( icon );

}